IBM MainFrame Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

COBOL (1072)
JCL (1031)
CICS (755)
DB2 (1122)

IMS (143)
IDMS (107)
Natural (81)
ADABAS (26)

REXX (60)
Assembler (68)
CLIST (6)
QMF (32)

MVS (25)
OS390 (10)
OS 2 (7)
VSAM (319)

IBM MainFrame Interview Questions

Questions Answers Views Company eMail

what is address space in mvs?

IBM,

1 3053

how to send a sms to a mobile through mainframe mvs?

IBM,

1239

How many register we are using in mvs?

IBM,

1093

what is pdes?

IBM,

1169

what is the facility that allows mainframes to be partitioned into lapars? A.z/os b.pr/sm c.vitual storaged.coupling facility

IBM,

1258

what is swap-in and swap-out?

IBM,

1160

what is the size of the address space in kbs for 16 bit address space?

IBM,

1166

how to define a directory and what is the structure and definition for the same?

IBM,

1129

what is the panel name of ispf primary option menu?

IBM,

1216

what is the syntax of ams modal commands?

IBM,

1336

what how do you initialize a vsam file before any operation? A vsam with alternate index?

IBM,

1070

what are the different types of vsam files available? Explain them

IBM,

1 1927

if you wish to use the rewrite command how must the vsam file be opened?

IBM,

1213

what is the purpose of the verify function of idcams?

IBM,

1106

how do you create an alternate index ?

IBM,

1128

Un-Answered Questions { IBM MainFrame }

Explain the three location modes?

965

Explain db2.

1091

Name a few CICS programs which are generally used ?

1121

What statement marks the beginning of an in-stream or cataloged procedure in jcl and assigns default values to parameters defined in the procedure?

1369

What the difference is between continue and next sentence?

1229

how do you reference the rrds file formats from cobol programs

1676

when does a dataset go uncataloged?

1361

What do you understand by the terms: joblib and steplib?

1264

Explain how to access vsam file?

1147

Are scope terminators compulsory? If they are, when?

1006

What is the cics command level?

1123

We have an output dataset in job with disp parameter as shr.

1007

how do you reference the fixed unblock file formats from cobol programs

1311

How and when does the db2 enforces the unique key?

1151

How do I add a column to an existing table in db2?

1091

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